Labor protection glove and production method thereof

ABSTRACT

A labor protection glove includes a glove body including a glove liner and a back rubber protection layer disposed on a surface of a back of the glove liner. The glove liner includes a skin contact layer, a moisture absorption layer disposed outside the skin contact layer and a wear-resistant layer disposed outside the moisture absorption layer. The back rubber protection layer includes a finger rubber layer disposed at a back of a finger of the glove, a palm-back rubber layer disposed at a back of a palm of the glove body, and a root knuckle rubber layer disposed between the finger rubber layer and the palm-back rubber layer for protecting a knuckle. The finger rubber layer and the root knuckle rubber layer are independently formed by injection molding.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a continuation of international PCT application serial No. PCT/CN2019/107377 filed on Sep. 23, 2019. The entirety of the above-mentioned patent application is incorporated herein by reference and made a part of this specification.

BACKGROUND Technical Field

This application relates to a technical field of production of a labor protection glove, and more particularly, to a labor protection glove and a production method thereof.

Description of Related Art

A labor protection appliance is a kind of defensive equipment used to protect the safety and health of a laborer in the process of production practice, which plays a very important role in reducing occupational hazards. A labor protection glove is a kind of common labor protection appliance, which can play a role in protecting the safety of a user's hand. It can be generally classified into medical glove, industrial glove and household glove, and can also be classified into natural rubber glove and polymer synthetic glove according to the material of the gloves.

In the prior art, a Chinese Application Publication No. CN101966738B discloses a method for injection molding a surface rubber layer of a fiber glove, which specifically includes the following steps: S1, first well wrapping the fiber glove to be coated on a human hand model body, and then placing the human hand model body well wrapped with the fiber glove in a mould body box matching the human hand model body, wherein a surface on a front side of the mould body and a corresponding surface of the mould body box form a front of hand cavity-type gap layer with a thickness of 0.1-0.5 mm, and a thickness of a back of hand cavity-type gap layer formed between a surface on a back side of the mould body and a corresponding surface of the mould body box decreases to zero, or the surface of the fiber glove and the corresponding surface of the mould body box form the back of hand cavity-type gap layer with a thickness of 0.1-0.5 mm, such that the area of the back of hand cavity-type gap layer or the area of the rubber layer coated on the back of the fiber glove is greater than zero; S2, after closing and sealing the mould body box, injecting liquid rubber into the front of hand cavity-type gap layer and the back of hand cavity-type gap layer from an injection molding hole on the mould body box by using an injection molding machine, and then cooling it for adhering firmly, wherein an injection molding temperature is in a range of 160−260°, and an injection molding pressure is in a range of 50-200 g per square centimeter; and S3, opening the mould body box and taking off the glove wrapped on the human hand model body to obtain a product.

In the existing technical solution, although a rubber protective film coated outside a limit liner of the glove by the injection molding machine has a certain protective effect, in actual use, the flexibility of the operation for the user's hand is impaired since the rubber protective film is entirely wrapped outside the fiber glove liner, and it also greatly reduces the shock-proof and impact-resistance effects of the back of the glove although the softness of the glove is improved as there is a cavity-type gap layer disposed between the rubber layer and the outer surface of the fiber glove liner. Therefore, the development of a labor protection glove which has high flexibility, the back of the glove can flexibly adapt to the movement of the joint of the back of the hand, and the back of the glove has a good shock-proof effect, has significant social and economic benefits.

SUMMARY

In a first aspect, this application provides a highly soft and anti-shock labor protection glove having advantages of good softness and comfort, high wear-resistance and good shock-proof effect.

In one embodiment, a labor protection glove includes a glove body including a glove liner and a back rubber protection layer disposed on a surface of a back of the glove liner. The glove liner includes a skin contact layer, a moisture absorption layer disposed outside the skin contact layer and a wear-resistant layer disposed outside the moisture absorption layer. The back rubber protection layer includes a finger rubber layer disposed at a back of fingers of the glove, a palm-back rubber layer disposed at a back of the glove body, and a root knuckle rubber layer disposed between the finger rubber layer and the palm-back rubber layer for protecting knuckles. The finger rubber layer and the root knuckle rubber layer are independently formed by injection molding.

By adopting the above technical solution, the skin contact layer can increase the comfort of the glove when wearing on a hand. Especially, when a wearer performs hand operation for a long time, the skin contact layer can reduce the fatigue produced by the friction between the glove liner and the hand, so as to improve wearing experience of the wearer. The moisture absorption layer can effectively absorb sweat excreted from the hand, thereby keeping the wearer's hand dry and comfortable, which is advantageous to improve work efficiency of the wearer. The wear-resistant layer can improve wear-resistance of the glove, which prolongs service life of the glove. Elasticity of the back rubber protection layer disposed at the back of the glove can provide protective effects of shock-proof and impact-resistance for the back of the hand. By respectively forming the finger rubber layer and the root knuckle rubber layer via independent injection molding, the flexibility of the finger rubber layer and the root knuckle rubber layer when they move in response to the movement of a joint of a finger is greatly improved, and the accuracy and the work efficiency of the hand operation for the wearer are also improved. The palm-back rubber layer can provide effective shock-proof protection for the back of the palm, so as to achieve the overall shock-proof protection for the back of the hand and achieve the effects of improving the flexibility of the hand and the accuracy of the operation for the wearer at the same time.

Further, a plurality of grooves are disposed at a surface of the finger rubber layer for increasing flexibility of the finger rubber layer when stretching out or bending inward with the knuckles.

The knuckles are required to bend in a more flexible and frequent way when a worker wearing the labor protection glove have to perform relatively flexible and complex operation. By providing a plurality of grooves at the surface of the finger rubber layer, the grooves are deformed corresponding to the bending of the knuckles when the finger bends, such that the finger rubber layer can better conform the fingers of the glove during movement, thereby achieving the effect of further improving the flexibility and adaptability of the finger rubber layer.

Further, a plurality of arc-shaped recesses are disposed at one side of the root knuckle rubber layer close to the finger rubber layer with openings of all the arc-shaped recesses facing the finger rubber layer.

Knuckles will bend and protrude toward the outside of a back of a hand when the palm and finger bend inward to perform gripping operation. At this time, the arc-shaped recesses disposed at one side of the root knuckle rubber layer close to the finger rubber layer are deformed corresponding to the bending of the knuckle. In addition, as the openings of the arc-shaped recesses face the finger rubber layer, the root knuckle rubber layer better conform the knuckles during movement, which further improves the flexibility and shock-proof effect of the root knuckle rubber layer.

Further, a connection rubber layer is disposed at one side of the root knuckle rubber layer away from the finger rubber layer, and the connection rubber layer is integrally connected with the root knuckle rubber layer and the palm-back rubber layer by injection molding, respectively.

The knuckles will bend and protrude toward the outside of a back of a hand when the palm and fingers bend inward to perform a gripping operation. At this time, the connection rubber layer stretches out following the deformation of the root knuckle rubber layer and palm-back rubber layer, such that there is potential energy to contract and rebound the root knuckle rubber layer and palm-back rubber layer. The connection rubber layer can play a role of instant contraction and resilience when the palm is recovered from the contracted state, thereby saving effort, especially significantly improving the comfort and work efficiency for a wearer when working for a long time.

Further, a pair of groove-shaped openings symmetrical with respect to the connection rubber layer are disposed between the root knuckle rubber layer and the palm-back rubber layer for increasing flexibility of the root knuckle rubber layer and flexibility of the palm-back rubber layer during movement with the knuckles.

In the above technical solution, by disposing the groove-shaped openings symmetrically with respect to the connection rubber layer, it can ensure the flexibility and adaptability of the root knuckle rubber layer and the palm-back rubber layer under the premise of increasing the tension of the root knuckle rubber layer and the palm-back rubber layer and providing given contraction force and resilience.

Further, a first division groove is disposed at one side of the arc-shaped recesses of the root knuckle rubber layer close to the palm-back rubber layer.

By adopting the above technical solution, as each of the knuckles independently bends inward and protrudes, the first division grooves enable the root knuckle rubber layer to contract and stretch out following individual knuckles, thereby further improving the flexibility and adaptability of the root knuckle rubber layer and also improving the shock-proof effect of the root knuckle rubber layer on the knuckle.

Further, a surface of the palm-back rubber layer is provided with a second division groove including a plurality of transversal division grooves and longitudinal division grooves which cross each other.

By adopting the above technical solution, the transversal division grooves and longitudinal division grooves crossing each other to form a divided planar mesh structure, such that the palm-back rubber layer can better conform the back of the hand when it deforms with the back of the hand, thereby improving the adaptability of the palm-back rubber layer and the comfort for the wearer.

Further, a wear-resistant rubber layer is disposed at an outer surface on one side of a palm of the glove body.

By adopting the above technical solution, the wear-resistant rubber layer can not only improve the wear-resistance of a palm portion of the glove but also achieve a water-proof effect in a special working environment.

In a second aspect, this application provides a production method of a labor protection glove which has advantages of stable production process, high production efficiency, high utilization rate of materials, and low production cost.

The second aspect of this application is achieved by the following technical solution.

A production method of the labor protection glove includes the following steps.

Step 1, preparing the glove liner: weaving the skin contact layer and the moisture absorption layer to form the glove liner.

Step 2, sewing the wear-resistant layer: sewing the wear-resistant layer on an outer surface of the glove liner.

Step 3, preparing the back rubber protection layer: wearing the glove liner on a hand model, placing the hand model with the glove liner into a rubber-injecting mould of an integrated injection molding machine, closing the rubber-injecting mould, injecting rubber onto an upper surface of fingers of the glove via a rubber-injecting hole located above the fingers of the glove while injecting molten rubber into a rubber-injecting hole located at the root knuckle, and cooling, to integrally form the root knuckle rubber layer and the palm-back rubber layer, so as to obtain the back rubber protection layer by rubber injection, wherein a rubber-injecting temperature is in a range of 180-220° C., and a rubber-injecting pressure is in a range of 15-22 MPa.

The molten rubber is injected into the interior of the mould through the rubber-injecting hole located on the rubber-injecting mould of the integrated injection molding machine, so as to form the back rubber protection layer, which greatly improves the production efficiency and the processing quality of the back rubber protection layer. At the same time, the rubber is injected into the upper surface of the fingers of the glove from individual rubber-injecting holes located above the fingers, so as to independently form the finger rubber layer by rubber injection. That is, the root knuckle rubber layer and the palm-back rubber layer can be formed for one time by injecting rubber into the rubber-injecting holes at the root knuckles of fingers of the glove. Such rubber injection from independent rubber-injecting holes can not only improve the rubber-injecting efficiency and rubber-injecting accuracy, but also effectively improve the utilization rate of the rubber, which significantly reduces the waste of the rubber thereby reducing the production cost.

Further, the molten material in the step 3 is one selected from a group consisting of TPE, TPR and TPU.

TPE is a kind of thermoplastic elastomeric material, which is suitable for injection molding, has advantages of high strength, good resilience, soft to the touch, good weather fastness and fatigue resistance, and can be recycled by injection molding for twice. Therefore it has unique performance and processing advantages as a material of the back rubber protection layer of the labor protection glove. TPR is a thermoplastic rubber material which has elasticity of the rubber, does not require vulcanization and can be directly injection molded. Therefore it can also be used as a good material for preparing the back rubber protection layer of the labor protection glove. TPU is a thermoplastic polyurethane elastic rubber with a wide range of hardness, good wear resistance, oil resistance, and high elasticity, therefore it can be used as the material of the protective rubber layer of the labor protection glove with good shock-proof and cushioning effects.

In summary, this application has the following beneficial effects.

The moisture absorption layer disposed in the glove liner of this application can effectively improve softness and comfort for the wearer and keep the hand dry and comfortable.

By respectively forming the finger rubber layer and the root knuckle rubber layer via independent injection molding, the flexibility of the finger rubber layer and the root knuckle rubber layer during movement with knuckles is greatly improved, and the accuracy and the work efficiency of the hand operation for the wearer are also improved.

The palm-back rubber layer in this application can provide effective shock-proof protection for the back of the palm, so as to achieve the overall shock-proof protection for the back of the hand and achieve the effects of improving the flexibility of the hand and the accuracy of the operation for the wearer at the same time.

The molten rubber is injected into the interior of the mould through the rubber-injecting hole located on the rubber-injecting mould of the integrated injection molding machine, so as to form the back rubber protection layer, which greatly improves the production efficiency and the processing quality of the back rubber protection layer. At the same time, the rubber is injected into the upper surface of the fingers of the glove from individual rubber-injecting holes located above the fingers, so as to independently form the finger rubber layer by rubber injection. That is, the root knuckle rubber layer and the palm-back rubber layer can be formed for one time by injecting rubber into the rubber-injecting holes at the root knuckles of fingers of the glove. Such rubber injection from independent rubber-injecting holes can not only improve the rubber-injecting efficiency and rubber-injecting accuracy, but also effectively improve the utilization rate of the rubber, which significantly reduces the waste of the rubber thereby reducing the production cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall schematic diagram of a labor protection glove in one embodiment;

FIG. 2 is a partially enlarged schematic diagram of part A in FIG. 1;

FIG. 3 is a structural schematic diagram showing a finger rubber layer in one embodiment; and

FIG. 4 is a schematic diagram showing a positional relationship between a root knuckle rubber layer and a palm-back rubber layer in one embodiment.

DESCRIPTION OF THE EMBODIMENTS

This application is described in detail below in combination with embodiments.

Embodiment 1

A highly soft and anti-shock labor protection glove, as shown in FIG. 1 and FIG. 2, includes a glove body 1. A wear-resistant rubber layer 6 is disposed at one side of a palm of the glove body 1 by dipping. The glove body 1 includes a glove liner 2 and a back rubber protection layer 3 disposed on a surface of a back of the glove liner 2. The glove liner 2 includes a skin contact layer 21 woven by at least one of cotton, spandex, polyester and aramid, a moisture absorption layer 22 sewn outside the skin contact layer 21 and woven by a blend of cotton, spandex and bamboo charcoal fiber, and a wear-resistant layer 23 sewn outside the moisture absorption layer 22 and woven by at least one of polyester, nylon and aramid.

As shown in FIG. 1, FIG. 3 and FIG. 4, the back rubber protection layer 3 includes a finger rubber layer 31 disposed at a back of fingers of the glove, and a plurality of grooves 311 are disposed at a surface of the finger rubber layer 31 for increasing flexibility of the finger rubber layer 31 when stretching out or bending inward with knuckles. A palm-back rubber layer 32 is injection molded at a back of the palm of the glove body 1 for providing effective shock-proof protection for the back of the palm. A surface of the palm-back rubber layer 32 is provided with a second division groove 321 including a plurality of transversal division grooves 3211 and longitudinal division grooves 3212 which cross each other to form a divided planar mesh structure, such that the palm-back rubber layer 32 can better conform a back of the hand when it deforms with the back of the hand, thereby improving the adaptability of the palm-back rubber layer 32 and the comfort for wearing.

As shown in FIG. 1 and FIG. 4, a root knuckle rubber layer 33 for protecting root knuckles is disposed between the finger rubber layer 31 and the palm-back rubber layer 32 by injection molding. A plurality of arc-shaped recesses 331 are disposed at one side of the root knuckle rubber layer 33 close to the finger rubber layer 31 with openings of all the arc-shaped recesses 331 facing the finger rubber layer 31. When the palm and fingers bend inward to perform gripping operation, the root knuckles will bend and protrude toward the outside of the back of a hand so that the arc-shaped recesses 331 disposed at one side of the root knuckle rubber layer 33 close to the finger rubber layer 31 are deformed corresponding to the bending of the root knuckles. In addition, the openings of the arc-shaped recesses 331 face the finger rubber layer 31, so that the root knuckle rubber layer 33 better conform the knuckles during movement, which further improves the flexibility and shock-proof effect of the root knuckle rubber layer 33.

As shown in FIG. 1 and FIG. 4, a connection rubber layer 4 is disposed at one side of the root knuckle rubber layer away from the finger rubber layer 31, and the connection rubber layer 4 is integrally connected with the root knuckle rubber layer 33 and the palm-back rubber layer 32 by injection molding, respectively. A first division groove 332 is disposed at one side of the arc-shaped recesses 331 of the root knuckle rubber layer 33 close to the palm-back rubber layer 32. A pair of groove-shaped openings 5 symmetrical with respect to the connection rubber layer 4 are disposed between the root knuckle rubber layer 33 and the palm-back rubber layer 32 for increasing flexibility of the root knuckle rubber layer 33 and flexibility of the palm-back rubber layer 32 for moving with the movement of joints of a hand.

Embodiment 2

A production method of a labor protection glove includes the following steps.

Step 1, preparing the glove liner 2: weaving the skin contact layer 21 and the moisture absorption layer 22 to form the glove liner 2.

Step 2, sewing the wear-resistant layer 23: sewing the wear-resistant layer 23 on an outer surface of the glove liner 2.

Step 3, preparing the back rubber protection layer 3: wearing the glove liner 2 on a hand model, placing the hand model with the glove liner 2 into a rubber-injecting mould of an integrated injection molding machine, closing the rubber-injecting mould, injecting rubber into rubber-injecting holes located above the fingers of the glove while injecting molten rubber into rubber-injecting holes located at root knuckles, and cooling to integrally forming the root knuckle rubber layer 33 and the palm-back rubber layer 32, so as to provide the back rubber protection layer 3 via rubber injection, wherein a rubber-injecting temperature is in a range of 180-220° C., a rubber-injecting pressure is in a range of 15-22 MPa, and the molten rubber in the step 3 is one selected from a group consisting of thermoplastic elastomer (TPE), thermoplastic rubber (TPR) and thermoplastic polyurethane (TPU).

Working principle is as follows. The molten rubber is injected into the interior of the mould through the rubber-injecting hole located on the rubber-injecting mould of the integrated injection molding machine, so as to form the back rubber protection layer 3, which greatly improves the production efficiency and the processing quality of the back rubber protection layer 3. At the same time, the rubber is injected into the upper surface of the fingers of the glove from individual rubber-injecting holes located above the fingers, so as to independently form the finger rubber layer 31 by rubber injection. That is, the root knuckle rubber layer 33 and the palm-back rubber layer 32 can be formed for one time by injecting rubber into the rubber-injecting holes at the root knuckles of fingers of the glove. Such rubber injection from independent rubber-injecting holes can not only improve the rubber-injecting efficiency and rubber-injecting accuracy, but also effectively improve the utilization rate of the rubber, which significantly reduces the waste of the rubber thereby reducing the production cost.

What is provided above is merely some preferred embodiments of this application. The scope of this application is not limited by the above embodiments, but should include all technical solutions under the thinking of this application. It is to be noted that, some improvements and modifications can be made by those skilled in the art without departing from the principle of this application, and should be considered to fall within the scope of this application. 

What is claimed is:
 1. A labor protection glove, comprising a glove body, wherein the glove body comprises a glove liner and a back rubber protection layer disposed on a surface of a back of the glove liner, the glove liner comprises a skin contact layer, a moisture absorption layer disposed outside the skin contact layer and a wear-resistant layer disposed outside the moisture absorption layer, the back rubber protection layer comprises a finger rubber layer disposed at a back of a finger of the glove, a palm-back rubber layer disposed at a back of a palm of the glove body, a root knuckle rubber layer disposed between the finger rubber layer and the palm-back rubber layer for protecting a root knuckle, and the finger rubber layer and the root knuckle rubber layer are independently formed by injection molding.
 2. The labor protection glove according to claim 1, wherein a plurality of grooves are disposed at a surface of the finger rubber layer.
 3. The labor protection glove according to claim 1, wherein a plurality of arc-shaped recesses are disposed at one side of the root knuckle rubber layer close to the finger rubber layer with openings of all the arc-shaped recesses facing the finger rubber layer.
 4. The labor protection glove according to claim 3, wherein a connection rubber layer is disposed at one side of the root knuckle rubber layer away from the finger rubber layer, and the connection rubber layer is integrally connected with the root knuckle rubber layer and the palm-back rubber layer by injection molding.
 5. The labor protection glove according to claim 4, wherein a pair of groove-shaped openings symmetrical with respect to the connection rubber layer are disposed between the root knuckle rubber layer and the palm-back rubber layer.
 6. The labor protection glove according to claim 3, wherein a first division groove is disposed at one side of the arc-shaped recesses of the root knuckle rubber layer close to the palm-back rubber layer.
 7. The labor protection glove according to claim 1, wherein a surface of the palm-back rubber layer is provided with a second division groove including a plurality of transversal division grooves and longitudinal division grooves which cross each other.
 8. The labor protection glove according to claim 1, wherein a wear-resistant rubber layer is disposed at one side of a palm of the glove body.
 9. A production method of the labor protection glove according to claim 1, the production method comprising the following steps: step 1, preparing the glove liner: weaving the skin contact layer and the moisture absorption layer to form the glove liner; step 2, sewing the wear-resistant layer: sewing the wear-resistant layer on an outer surface of the glove liner; and step 3, preparing the back rubber protection layer: wearing the glove liner on a hand model, placing the hand model with the glove liner into a rubber-injecting mould of an integrated injection molding machine, closing the rubber-injecting mould, injecting rubber onto an upper surface of the finger of the glove via a rubber-injecting hole located above the finger of the glove while injecting molten rubber into a rubber-injecting hole located at the root knuckle, and cooling to integrally form the root knuckle rubber layer and the palm-back rubber layer, so as to obtain the back rubber protection layer by rubber injection, wherein a rubber-injecting temperature is in a range of 180-220° C., and a rubber-injecting pressure is in a range of 15-22 MPa.
 10. The production method of the labor protection glove according to claim 9, wherein the molten rubber in the step 3 is one selected from a group consisting of TPE, TPR and TPU. 